Multiple blennies/gobies

[Shellyfish]

I have a 90g tank with a bicolor blenny. Would it be possible to add a second blenny or a goby without causing fighting?

 

[peasofme]

yes. depends on species. most escenius are peaceful. lawnmower isn't. as far as gobies. the larger gobies are aggressive.

 

[SecretiveFish]

Your current blenny will probably get along OK with any goby, If you really wanted to add a second blenny, I would definitely not add a lawnmower like peasofme said (lawnmower blenny while fun are nasty little suckers) or starry blenny (fun too, but I suspect them to be nasty to other blennies too). I would either try a sailfin blenny (like a black or golden) or a venomous blenny of some sort.

 

[peasofme]

anyone ever tried starry + other blenny or heard of it?

 

[ruvtfan]

anyone ever tried starry + other blenny or heard of it?

I have only heard these ending badly but have not tried myself.

 

[Shellyfish]

Thanks!

 

[seapug]

anyone ever tried starry + other blenny or heard of it?

I have a starry blenny and a blue and gold blenny in my 90 and they are fine together. My starry blenny is a model citizen. Another goby would be fine, but what you should avoid is adding another Escenius blenny if you already have a bi-color. That's known to be problematic.

 

[Huntatyler]

I had a harptail blenny and a striped blenny in my 55 and they got along just fine.

 

[ggrillo]

I keep a Midas and a Lawnmower blenny together in my 55 without any trouble.
They were actually in a 20 for about 6 weeks and never even paid attention to one another.

 

[Robb in Austin]

I've kept a tailspot with a lawnmower, in a 58 and a 75, without issue. They ignore each other.

 

[Khemul]

anyone ever tried starry + other blenny or heard of it?

I have a Lawnmower with a Starry. They are in a 5' 60g. The key is having plenty of hiding places for the less dominant blenny. The Starry Blenny doesn't seem as aggressive, but it was added second. The Lawnmower chases the Starry when it sees it, but it is more like it is just establishing that it is the boss, rather then trying to do any damage. The Starry seems to get plenty of grazing time. I could see though that if the Starry didn't have any good hiding place then things would end badly.